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01-0620: Bonding: Checkpoint 01: Chem
Contributed by: Chang
Atom
W
V
Z
X
Y
Complete the table
Proton number
12
17
8
7
1
Electron arrangement
,
,
,
,
,
,
,
▪
▪
Atom
Which of the atoms forms a molecule to
achieve a             arrangement?
Which of the  atoms forms a molecule
with a            bond ?
W
V
Z
X
Y
triple
Proton number
duplet
Electron arrangement
2.6
2.5
1
2.8.2
2.8.7
Z has a tendency to
Y has a higher tendency to
in terms of their tendency to 
What is the difference between atom
Atom
Z
?
W
V
Z
X
Y
is more
Proton number
electronegative
?
12
17
8
7
1
accept
?
donate
?
an
donate or accept
electron
?
Electron arrangement
2.6
than
2.5
Y
y
?
electrons.
and atom
1
.As such
compared to Y
2.8.2
electrons?
2.8.7
z
electrons to achieve the
of
this is achieved when two atoms of V
▪
▪
Atom
W
V
Z
X
Y
Two atoms of V will form
A V atom has
electrons
?
Proton number
forming a
12
17
8
7
1
six
?
valence electrons needs
octet
?
double
covalent
?
Electron arrangement
2.6
electron arrangement.
bond
?
2.5
share
?
1
bond
2.8.2
two pairs
2.8.7
two
?
electrons to achieve the
of
this is achieved when two atoms of V
▪
▪
Atom
W
V
Z
X
Y
Two atoms of V will form
A V atom has
Proton number
forming a
12
17
8
7
1
six
valence electrons needs
double
Electron arrangement
2.6
electron arrangement.
2.5
share
1
bond
2.8.2
two pairs
2.8.7
two
●
Atom
●
●
●
●
V
●
●
●
●
●
V
V
●
●
Proton number
●
⊠
⊠
●
●
●
●
●
8
⊠
⊠
V
V
⊠
⊠
⊠
⊠
⊠
⊠
⊠
⊠
⊠
⊠
A
B
Electron arrangement
Which diagram shows
2.6
electron arrangement
of the molecule
the correct
form by 2 atoms
A
of V?
B
●
Atom
●
●
V
●
●
V
What type of bond 
is this?
●
Proton number
●
⊠
⊠
●
8
⊠
V
⊠
⊠
⊠
⊠
⊠
Electron arrangement
2.6
Ionic bond
covalent bond
metalic bond
dative bond
●
Atom
●
●
V
●
●
V
How many electrons are shared in the bond?
●
Proton number
●
⊠
⊠
●
8
⊠
V
⊠
⊠
⊠
⊠
⊠
Electron arrangement
2.6
1
2
3
4
●
Atom
●
●
V
●
●
V
The bond formed is a  ________bond?
●
Proton number
●
⊠
⊠
●
8
⊠
V
⊠
⊠
⊠
⊠
⊠
Electron arrangement
2.6
single
double
triple
ionic
Atom
▪
W
V
Z
X
Y
The type of bond formed by atoms Y and Z is
Proton number
bond
12
17
8
7
1
Electron arrangement
2.6
2.5
1
2.8.2
2.8.7
Atom
▪
▪
Y
Z
when it
achieves the stable
achieves a
when it
a
A z atom with an electron arrangement
Y atom with an electron arrangement of
Y2+ ion
?
donates
?
accepts
?
Proton number
stable
?
17
12
two
octet
one
?
octet
?
valence
?
electron
electron arrangement
electron arrangement
Electron arrangement
electrons
to form a
2.8.2
2.8.7
2.8.7
?
to form
2.8.2
?
Z- ion
?
Atom
▪
▪
Y
Z
when it
achieves the stable
achieves a
when it
a
A z atom with an electron arrangement
Y atom with an electron arrangement of
Y2+ ion
donates
accepts
Proton number
stable
17
12
two
octet
electron
electron arrangement
electron arrangement
Electron arrangement
electrons
to form a
2.8.2
2.8.7
2.8.7
to form
2.8.2
Z- ion
covalent
ionic
respectively from
Atom
Hence
and
Y
Z
bonds are formed between
two
?
two
Proton number
Z
?
Z- ion
17
12
atoms
one
Y
?
accept
atom.
Electron arrangement
one
one
?
2.8.2
2.8.7
electron
Y2+ ion
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